Peb siv cov ncuav qab zib los txhim kho koj qhov kev paub. Los ntawm kev txuas ntxiv mus saib lub vev xaib no, koj pom zoo rau peb siv cov ncuav qab zib. Cov ntaub ntawv ntxiv.
Hauv kev tshawb fawb ua ntej hauv Phau Ntawv Xov Xwm ntawm Cov Khoom Siv Nuclear, cov khoom siv tshiab tshiab austenitic stainless hlau nrog sib npaug faib nanosized NbC precipitates (ARES-6) thiab cov pa 316 stainless hlau tau tshuaj xyuas nyob rau hauv hnyav ion irradiation. Kev coj tus cwj pwm tom qab o los sib piv cov txiaj ntsig ntawm ARES-6.
Txoj kev tshawb no: o tsis kam ntawm austenitic stainless hlau nrog tusyees faib nanoscale NbC precipitates nyob rau hauv hnyav ion irradiation. Duab credit: Parilov/Shutterstock.com
Austenitic stainless hlau (SS) feem ntau yog siv los ua cov khoom siv sab hauv hauv lub teeb dej niaj hnub reactors uas lawv raug rau cov hluav taws xob ntau.
Kev hloov pauv hauv cov qauv ntawm austenitic stainless steels thaum neutron capture adversely cuam tshuam rau lub cev tsis xws li hluav taws xob hardening thiab thermal decomposition. Deformation cycles, porosity, thiab excitation yog piv txwv ntawm hluav taws xob-induced microstructure evolution feem ntau pom nyob rau hauv austenitic stainless hlau.
Tsis tas li ntawd, austenitic stainless hlau yog raug rau hluav taws xob vim lub tshuab nqus tsev nthuav dav, uas tuaj yeem ua rau muaj peev xwm ua rau tuag taus ntawm cov khoom siv hluav taws xob. Yog li, kev tsim kho tshiab hauv cov tshuab hluav taws xob niaj hnub no nrog lub neej ntev thiab kev tsim khoom ntau dua yuav tsum tau siv cov kev sib dhos nyuaj uas tuaj yeem tiv taus hluav taws xob ntau dua.
Txij li thaum xyoo 1970s, ntau txoj hauv kev tau npaj rau kev tsim cov khoom siv hluav taws xob. Raws li ib feem ntawm kev siv zog los txhim kho hluav taws xob efficiency, lub luag haujlwm tseem ceeb ntawm lub tshuab nqus tsev nthuav dav elasticity tau kawm. Tab sis txawm li ntawd los, vim hais tias cov nickel austenitic stainless hlau siab heev raug cuam tshuam rau hluav taws xob embrittlement vim helium droplet deformation, qis austenite stainless hlau tsis tuaj yeem lav kev tiv thaiv corrosion txaus nyob rau hauv cov xwm txheej corrosive. Kuj tseem muaj qee qhov kev txwv txhawm rau txhim kho hluav taws xob ua haujlwm los ntawm kev kho cov txheej txheem alloy.
Lwm txoj hauv kev yog suav nrog ntau yam microstructural nta uas tuaj yeem ua raws li cov ntsiab lus ntws rau qhov tsis ua tiav. Lub dab dej tuaj yeem ua rau muaj kev nqus ntawm cov hluav taws xob ua rau lub cev tsis xws luag, ncua kev tsim cov qhov thiab cov voj voog hloov pauv uas tsim los ntawm kev sib koom ua ke ntawm qhov chaw ua haujlwm thiab qhov khoob.
Ntau qhov kev tsis sib haum xeeb, me me precipitates, thiab cov qauv granular tau raug npaj ua absorbers uas tuaj yeem txhim kho hluav taws xob zoo. Lub tswv yim tsim qauv tsim tawm thiab ntau qhov kev soj ntsuam tau qhia txog cov txiaj ntsig ntawm cov qauv microstructural hauv kev txwv tsis pub nthuav dav thiab txo cov hluav taws xob vim kev sib cais. Txawm li cas los xij, qhov sib txawv maj mam kho raws li kev cuam tshuam ntawm hluav taws xob thiab tsis ua tiav kev ua haujlwm ntawm qhov dej ntws.
Cov kws tshawb fawb tsis ntev los no tau tsim cov austenitic stainless hlau nrog qhov sib piv ntawm nano-niobium carbide precipitates uniformly dispersed nyob rau hauv lub matrix siv ib tug industrial steelmaking txheej txheem tom qab lub npe hu ua ARES-6.
Feem ntau cov precipitates yuav tsum tau muab cov chaw hauv lub dab dej txaus rau cov hluav taws xob hauv qhov tsis xws luag, yog li ua kom cov hluav taws xob ua haujlwm ntawm ARES-6 alloys. Txawm li cas los xij, lub xub ntiag ntawm microscopic precipitates ntawm niobium carbide tsis muab cov khoom xav tau ntawm hluav taws xob tiv thaiv raws li lub moj khaum.
Yog li ntawd, lub hom phiaj ntawm txoj kev tshawb no yog los soj ntsuam cov txiaj ntsig zoo ntawm cov niobium carbides me me ntawm kev nthuav dav. Kev noj tshuaj npaum li cas cuam tshuam txog kev ua neej ntev ntawm cov kab mob nanoscale thaum lub sij hawm hnyav ion bombardment kuj tau tshawb xyuas.
Txhawm rau tshawb xyuas qhov nce ntawm qhov sib txawv, ib qho tshiab uas tsim tawm ARES-6 alloy nrog sib xyaw ua ke niobium nanocarbides zoo siab rau cov hlau thiab foob pob nrog 5 MeV nickel ions. Cov lus xaus hauv qab no yog ua raws li kev ntsuas qhov o, nanometer electron microscopy microstructure kev tshawb fawb, thiab kev ntsuas lub zog poob.
Ntawm cov khoom siv microstructural ntawm ARES-6P, qhov siab ntawm nanoniobium carbide precipitates yog qhov tseem ceeb tshaj plaws rau kev nce elasticity thaum lub sij hawm o, txawm hais tias lub siab concentration ntawm nickel kuj plays lub luag hauj lwm. Muab qhov kev hloov pauv ntau zaus, ARES-6HR nthuav tawm qhov nthuav dav piv rau ARES-6SA, tawm tswv yim tias, txawm tias muaj zog ntxiv ntawm cov qauv tank, kev hloov pauv hauv ARES-6HR ib leeg tsis tuaj yeem muab qhov chaw ntws zoo.
Tom qab bombardment nrog hnyav ions, nanoscale quasi-crystalline xwm ntawm precipitates ntawm niobium carbide puas. Yog li ntawd, thaum siv qhov hnyav ion bombardment qhov chaw siv hauv kev ua haujlwm no, feem ntau ntawm cov kab mob uas muaj nyob rau hauv cov qauv uas tsis yog-irradiated maj mam dissipated hauv matrix.
Txawm hais tias lub peev xwm ntawm ARES-6P yuav tsum yog peb npaug ntawm 316 stainless hlau phaj, qhov ntsuas qhov nthuav dav yog kwv yees li xya zaus.
Kev tawg ntawm precipitates ntawm niobium nanocarbide thaum raug lub teeb piav qhia txog qhov sib txawv loj ntawm qhov kev cia siab thiab qhov tseeb o tsis kam ntawm ARES-6P. Txawm li cas los xij, nanoniobium carbide crystallites yuav tsum tau ua kom ntev dua ntawm cov nqi qis dua, thiab kev nthuav dav elasticity ntawm ARES-6P yuav zoo dua yav tom ntej nyob rau hauv ib txwm muaj hluav taws xob cog qoob loo.
Shin, JH, Kong, BS, Jeong, C., Eom, HJ, Jang, C., & AlMousa, N. (2022). Shin, JH, Kong, BS, Jeong, C., Eom, HJ, Jang, C., & AlMousa, N. (2022). Shin, JH, Kong, BS, Chon, K., Eom, HJ, Jang, K., & Al-Musa, N. (2022). Shin, JH, Kong, BS, Jeong, C., Eom, HJ, Jang, C., & AlMousa, N. (2022). Shin, JH, Kong, BS, Jeong, C., Eom, HJ, Jang, C., & AlMousa, N. (2022). Shin, JH, Kong, BS, Chon, K., Eom, HJ, Jang, K., & Al-Musa, N. (2022).o tsis kam ntawm austenitic stainless hlau nrog sib npaug nanosized NbC precipitates nyob rau hauv irradiation nrog hnyav ions. Phau ntawv Journal of Nuclear Materials. Muaj nyob ntawm: https://www.sciencedirect.com/science/article/pii/S0022311522001714?via%3Dihub.
Tsis lees paub: Cov kev xav tau hais tawm ntawm no yog cov neeg sau ntawv hauv nws tus kheej lub peev xwm thiab tsis tas yuav cuam tshuam cov kev xav ntawm AZoM.com Limited T / A AZoNetwork, tus tswv thiab tus neeg teb xov tooj ntawm lub vev xaib no. Qhov kev lees paub no yog ib feem ntawm cov ntsiab lus ntawm kev siv lub vev xaib no.
Shahir kawm tiav los ntawm Kws qhia ntawv ntawm Aerospace Engineering ntawm Islamabad Institute of Space Technology. Nws tau ua ntau yam kev tshawb fawb hauv aerospace instruments thiab sensors, computer dynamics, aerospace structures and materials, optimization techniques, robotics, and clean energy. Xyoo tas los nws tau ua haujlwm ua tus kws pab tswv yim ywj pheej hauv kev lag luam aerospace. Kev sau ntawv ib txwm yog Shahir lub zog. Txawm hais tias nws yeej khoom plig hauv kev sib tw thoob ntiaj teb lossis yeej kev sib tw sau ntawv hauv zos, nws ua tau zoo. Shahir hlub tsheb. Los ntawm Formula 1 kev sib tw thiab nyeem ntawv xov xwm tsheb mus rau kev sib tw kart, nws lub neej tig mus ncig tsheb. Nws mob siab rau nws txoj kev ua kis las thiab ib txwm sim nrhiav sijhawm rau nws. Squash, football, kab civliv, ntaus pob tesniv thiab kev sib tw yog nws txoj haujlwm uas nws nyiam siv sijhawm nrog.
Kub hws, Shahr. (Lub Peb Hlis 22, 2022). Lub o tsis kam ntawm ib qho tshiab nanomodified reactor alloy tau raug tshuaj xyuas. AZonano. Tau txais lub Cuaj Hlis 11, 2022 los ntawm https://www.azonano.com/news.aspx?newsID=38861.
Kub hws, Shahr. "Kev tsom xam qhov o ntawm cov Nano-Modified Reactor Alloys tshiab". AZonano.Cuaj hlis 11, 2022.Cuaj hlis 11, 2022.
Kub hws, Shahr. "Kev tsom xam qhov o ntawm cov Nano-Modified Reactor Alloys tshiab". AZonano. Tau qhov twg los: https://www.azonano.com/news.aspx?newsID=38861. (Lub Cuaj Hlis 11, 2022).
Kub hws, Shahr. 2022. Kev soj ntsuam o ntawm cov reactor tshiab nanomodified alloys. AZoNano, nkag mus rau 11 Cuaj hlis 2022, https://www.azonano.com/news.aspx?newsID=38861.
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